Heating pad



FIG. 1 is a top, left, front perspective view of a heating pad, showing my new design.

FIG. 2 is a top, left, rear perspective view thereof.

FIG. 3 is a bottom, right, rear perspective view thereof.

FIG. 4 is a top plan view thereof.

FIG. 5 is a bottom plan view thereof.

FIG. 6 is a left elevation view thereof, which is a mirror image of the right elevation view.

FIG. 7 is a front elevation view thereof; and,

FIG. 8 is a rear elevation view thereof.

The broken lines, where shown, represent portions of the heating pad that form no part of the claimed design. 

CLAIM The ornamental design for a heating pad, as shown and described. 